Cart support



FIG. 1 is a perspective view of a cart support showing my new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a front view thereof;

FIG. 7 is a rear view thereof; and,

FIG. 8 is a perspective view thereof in a lower configuration.

The broken lines shown in FIG. 5 illustrate portions of the cart support that form no part of the claimed design. 

CLAIM The ornamental design for a cart support, as shown and described. 